Queue using link list c++ code

 Hi, guys code for queue using link list in c++ language

#include<iostream>

using namespace std;

struct node

{

    int data;

    node *next;

};

struct node *front=0, *rear=0;

void enqueue(int x)

{

    node *newnode;

    newnode=new node;

    newnode->next=0;

    newnode->data=x;

    if(front==0 and rear==0)

    {

        front=rear=newnode;

    }

    else

    {

        rear->next=newnode;

        rear=newnode;

    }

}

void display () {

    node *temp=front;

    while(temp!=0)

    {

        cout<<temp->data<<endl;

        temp=temp->next;

    }

}

void dequeue() {

    node *temp=front;

    front=front->next;

    delete (temp) ;

}

main() {

    enqueue(3) ;

    enqueue (8) ;

    enqueue(7) ;

    dequeue () ;

    display () ;

}